[gtk+] treeview: Stop using gtk_widget_show_now

[Matthias Clasen <matthiasc src gnome org>]

commit ee6fc6492f039ecee5ad3c5398f1de3b8aaf5c21
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 2 18:13:36 2018 +0100

    treeview: Stop using gtk_widget_show_now
    
    If this is a problem, it needs to be handled explicitly.

 gtk/gtktreeview.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index b9433e5..c392531 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -2176,7 +2176,7 @@ gtk_tree_view_map_buttons (GtkTreeView *tree_view)
          button = gtk_tree_view_column_get_button (column);
 
           if (gtk_tree_view_column_get_visible (column) && button)
-            gtk_widget_show_now (button);
+            gtk_widget_show (button);
 
           if (gtk_widget_get_visible (button) &&
               !gtk_widget_get_mapped (button))